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Holmium
Holmium

Chromium
Chromium



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Holmium
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Chromium

Facts About Holmium and Chromium

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1 Facts
1.1 Interesting Facts
  • Holmium metal is very soft and malleable.
  • Holmium metal is well known for its corrosion resistivity.
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of metals, Ores of Minerals
1.3 History
1.3.1 Who Discovered
Marc Delafontaine
Louis Nicolas Vauquelin
1.3.2 Discovery
In 1878
In Between 1797 - 1798
1.4 Abundance
1.4.1 Abundance In Universe
5 * 10-8 %1.5 * 10-3 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~-9999 %~0.002 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.00 %0.30 %
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
0.00 %0.01 %
Facts About Radium
9.9E-12 8.1
1.1.1 Abundance In Oceans
0.00 %0.00 %
Facts About Protactinium
2E-23 1.1
1.1.2 Abundance In Humans
NA0.00 %
Facts About Radium
1E-13 1.4